Pyrophanite
Liferovich R P, Mitchell R H
Physics and Chemistry of Minerals 32 (2005) 442-449
Rhombohedral ilmenite group nickel titanates with Zn, Mg, and Mn:
synthesis and crystal structures
_database_code_amcsd 0008978
5.0855 5.0855 14.0191 90 90 120 R-3
atom     x     y     z occ Biso
NiA      0     0 .3554  .5  .19
MnA      0     0 .3554  .5  .19
TiB      0     0 .1454      .12
O1   .3169 .0247 .2445      .30